Optimal design of a composite I-beam

Morton, SK; Webber, J. P. H.

doi:10.1016/0263-8223(94)90045-0

Cited by 20 publications

(13 citation statements)

References 10 publications

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“…Magnucki [25] optimised cold-form thin-walled beams with open cross-section for strength, stability, and geometric conditions. For thin-walled composite beams, Morton and Webber [26] developed analytic procedure to obtain an optimal solution of I-section beams with failure, local buckling and deflection constraints. Davalos and Qiao [27] presented multiobjective design optimisation formulation to optimise composite I-section beams with respect to fibre orientations and fibre percentages.…”

Section: Introductionmentioning

confidence: 99%

Vibration and lateral buckling optimisation of thin-walled laminated composite channel-section beams

Nguyễn

Lee

et al. 2016

Composite Structures

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Citation: Nguyen, Hoang, Lee, Jaehong, Vo, Thuc and Lanc, Domagoj (2016) Northumbria University has developed Northumbria Research Link (NRL) to enable users to access the University's research output. Copyright © and moral rights for items on NRL are retained by the individual author(s) and/or other copyright owners. Single copies of full items can be reproduced, displayed or performed, and given to third parties in any format or medium for personal research or study, educational, or not-for-profit purposes without prior permission or charge, provided the authors, title and full bibliographic details are given, as well as a hyperlink and/or URL to the original metadata page. The content must not be changed in any way. Full items must not be sold commercially in any format or medium without formal permission of the copyright holder. The full policy is available online: http://nrl.northumbria.ac.uk/policies.html This document may differ from the final, published version of the research and has been made available online in accordance with publisher policies. To read and/or cite from the published version of the research, please visit the publisher's website (a subscription may be required.) AbstractThis study presents vibration and lateral buckling optimisation of thin-walled laminated composite beams with channel sections. While flanges' width, web's height, and fibre orientation are simultaneously treated as design variables, the objective function involves maximising the fundamental frequency and critical buckling moment. Based on the classical beam theory, the beam element with seven degrees of freedom at each node is developed to solve the problem. Micro Genetic Algorithm (micro-GA) is then employed as an optimisation tool to obtain optimal results. A number of composite channel-section beams with different types of boundary conditions, span-to-height ratios, and lay-up schemes are investigated for the optimum design. The outcomes reveal that geometric parameters severely govern the optimal solution rather than the fibre orientation and it is considerably effective to use micro-GA compared with regular GA in term of optimal solution and convergence rate.

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Section: Introductionmentioning

confidence: 99%

Vibration and lateral buckling optimisation of thin-walled laminated composite channel-section beams

Nguyễn

Lee

et al. 2016

Composite Structures

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“…Given a cross section, a stacking sequence for the walls, it is shown that effective stiffness can be calculated. Morton and Webber [10] have described a procedure for obtaining an optimum (minimum area) design of a uniform composite I-beam with regard to structural failure, local buckling and central deflection constraint. The beam is subjected to lateral point load at its mid point and is assumed to be simply supported at each end and they have extended the method to fixed ends as well.…”

Section: Mechanics Of Laminate Thin-walled Beammentioning

confidence: 99%

Optimal laminate sequence of non-prismatic thin-walled composite spatial members of generic section

Rajasekaran

2005

Composite Structures

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“…Szymcazak (1984) optimized the weight design of thin-walled beams whose natural frequency of torsional vibration was given. Morton (1994) described a procedure for obtaining the minimum cross-sectional area of composite I-beam considering structural failure, local buckling and displacement. Design variable of material architecture such as the fiber orientation and the fiber volume were employed in the investigation of Davalos et al (1996) for transversely loaded composite I-beams.…”

Section: Introductionmentioning

confidence: 99%

Optimum design of thin-walled composite beams for flexural–torsional buckling problem

Nguyễn

Kim

Lee

2015

Composite Structures

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Optimal design of a composite I-beam

Cited by 20 publications

References 10 publications

Vibration and lateral buckling optimisation of thin-walled laminated composite channel-section beams

Vibration and lateral buckling optimisation of thin-walled laminated composite channel-section beams

Optimal laminate sequence of non-prismatic thin-walled composite spatial members of generic section

Optimum design of thin-walled composite beams for flexural–torsional buckling problem

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